<!DOCTYPE html>
<html>

<head>
    <meta charset="utf-8" />
    <meta name="viewport" content="width=device-width,initial-scale=1,minimum-scale=1,maximum-scale=1,user-scalable=0" />
    <style type="text/css">
        html, body, img {
            padding: 0;
            margin: 0;
        }

        img {
            margin: 0 auto;
            max-width: 100vm!important;
            overflow-clip-margin: content-box;
            overflow: clip;
            vertical-align: top;
            height: auto;
            width: 100%;
        }

        .img-ks-lazyload {
            -webkit-animation: ks-fadeIn 350ms linear 0ms 1 normal both;
            animation: ks-fadeIn 350ms linear 0ms 1 normal both;
            opacity: 1;
        }

        @keyframes ks-fadeIn {
            0%{opacity:0} 100%{opacity:1}
        }

        #description .img-ks-lazyload {
            background-size: contain;
            background-repeat: no-repeat;
            object-fit: contain;
            height: auto;
        }
    </style>
</head>

<body>
学习资料 mypage

</body>

</html>